I read your question and my first reaction is:
The people reading your answer are doing so in about 2 minutes total. The computer grading software and individual test evaluators are most likely programmed and trained to scan for proper nouns (capitalized names of places, companies, people, etc.) so the presence of a proper noun will generate interest or points
Also, just as you were not familiar with Yugo, some graders will not be familiar with <insert the name of a company>. Remember the graders are not selected for their wide knowledge of many subjects. They are selected for their #1 desire, and #2 ability to quickly scan many essays in a row.
With this in mind, your explanation is much more important. If you use an example that may not be commonly known, you must be sure the reason for using this example is clear. In fact it might be better to use a less commonly known example, because then if you finish early, you can go back an add one or two sentences explaining this background information of this example. This will increase the length and word count of your writing.I am an American working as a college instructor in China, but I have never been a grader for standardized test essays.
So I can help....please explain how you will use Grammy in your writing.
As I write I think of good an bad examples.
Here are 2 that use the US company Microsoft.Poor: "... Government regulation is needed in the software industry. Without government regulation we will end up with more cases like Microsoft."Good: "... Government regulation of software companies is needed. Without government intervention leading software companies will use their power to stifle competition in the industry. The actions of Microsoft in the 1990's are a great example. Microsoft reduced competition by using different pricing strategies to convince computer builders to exclusively install Microsoft's Windows computer operating system. Computer builders who did not agree to exclusive use of Microsoft products were faced with significantly higher pricing. Recent court decisions against Microsoft have re-opened the operating system market. Now consumers can find computers with operating systems such as Linux, and Chrome from Google."
I hope the second example is clear to many readers, even those who are not familiar with Microsoft. If you find that it is not please tell me so I can increase my AWA score.